Machine for operating on shoe-bottoms.



E. E. WINKLEY.

MACHINE FOR OPERATFNG ON SHOE BOTTOMS.

APPLICATION FILED NOV. 29. 1912- v Patented Oct. 9, 1917.

9 SHEETS SHEET l.

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E. E. WINKLEY.

MACHINE FOR OPERATING 0N SHOE BOTTOMS.

APPLlCATlON FILED NOV. 29. mm.

1 ,4,5@3 Patented Oct. 9, 1917.

9 SHEETSSHEET 2.

ZZ7Z66566 fi aggwar way 466% I f [OWE/MW 4 E. E. WINKLEY.

MACHHVE FOR OPERATING 0N SHOE BOTTOMS.

' APPLICATION FILED NOVQZQ, 1912- 1;,2%2,53. Patented Oct. 9,1917.

9 SHEETS-SHEET 3.

E. E. WINKLEY.

MACHINE FOR OPERATING 0N SHOE BOTTOMS. h APPLlCATlON FILED NOV. 29, I912. 1,24%,5$0 Patented Oct. 9,1917.

9 SHEETSQSHEET 4- E. E. WINKLEY. MACHINE FOR OPERATING 0N SHOE BOTTOMS.

APPLICATION FILED NOV. 29. I912- Patented Oct. 9,1917.

SSHEETS-SHEET 6.

E. E. WINKLEY. MACHINE FOR OPERATING 0N SHOE BOTITOMS.

APPLICATION FILED NOV. 29. I912- Patented Oct. 9,1917.

9 SHEETSSHEET 7.

- WINKLEY.

MACHINE F ATING 0N SHOE BOTTOMS.

APP FILED NOV. 29. 1912. Patented Oct. 9,1917.

. 9 SHEETS-SHEET 8.

E. E. WINKLEY.

MACHINE FOR OPERATING 0N SHOE BOTTOMS.

n APPLICATION FILED NOV. 29, 1912. wso

9 SHEETS-SHEET 9.

A glllllllllql mgi Patented 0%. 9,1917.

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ERASTUS-EDW IN WINKLEY, 0F LYNN, MASSACHUSETTS, -ASSIGNOR T0 UNITED SHOE. MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW J ERSEY.

Specification of Letters Batent.

Patented @ct. 9, 1%. 7.

Application filed November 29, 1912. Serial N 0. 734,095.

To all whom it may concern Be it known that I, ERA STUS E. WINKLEY, citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Operating on Shoe-Bottoms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to machines for operating on shoes in a partial state of completion, and more particularly to tacking mechanisms for securing certain parts together.

The present invention relates to tacking mechanisms of the. general character found in Welt butting machines of the type illustrated in my prior Letters Patent of the United States, No. 1,029,037, dated June 18, 1912, in which there are provided devices for both butting the Welt ends and for secur ing the butted Welt ends to the insole;

One object of the present invention is to simplify and improve the type of tacking mechanism used in my prior machine to permit operation at a greater speed than that which has heretofore been practicable While at the same time performing the desired operations in a more efficient manner With less expenditure of power. Other objects of the invention are to improve the adaptability of the machine to operating on all sizes and styles of shoes Without preliminary adjustment, and to simplify and improve the construction and operation of the devices for positioning and supporting the shoe for the tacking'operation of Whatever character it may be.

To the accomplishment of these objects and such others as may hereinafter appear, the features of the invention relate to certain devices, combinations and arrangements of parts, hereinafter described and then set forth broadly and in detail in the appended claims, possessing advantages which will be apparent to those skilled in the art.

The various features of the invention Will be best understood from an inspection of the Figs. 2 and 2 ,.taken together, are a right side elevation; Fig. 3 is a rear elevation of the parts illustrated in Figs. 1 and 2;

Fig. 4. is a sectional elevation with a portion of the frame broken away to show underlying parts;

Fig. 5 is a sectional elevation on the line 55, Fig. 4;

Fig. 6 is a sectional plan on the line 66, Fig. 4:;

Fig. 7 is a sectional elevation on the line 77, Fig. 6;

Fig. 8 is a detail in plan of the Welt rests in position beneath the Welt on a Weltedinsoled shoe;

Fig. 9 is a detail in front elevation, partly in section, of one of the tacker mechanisms;

Fig. 10 is a sectional plan on the line -1o 10, Fig. 9; 1

Fig. 11 is a detail in plan, looking from the rear of the machine, of the cam and associated devices for controlling the tacker mechanisms driving springs;

Fig. 12. is a detail in rear elevation, partly in section, of the parts illustrated in Fig. 11;

Fig. 13 is an additional detail in plan of the spring controlling cam;

Fig. 14 is a perspective, partly in section, 0% the heelv portion of an unbutted Welted :5 0e;

Fig. 15 is a detail, partly in section, showing the efiect on the shoe, of the Welt rests,

When brought into Welt supporting position; and

Fig. 16 is a detail, partly in section, showing the position of the tacker mechanisms When in Welt tacking position.

As the features of the present invention are illustrated in connection with their usefulness in securing the butted ends of the Welt, of a Welted, unsoled shoe, to the insole, it Will be convenient to give a general description of the Welt butting instrumentalities.

The illustrated embodiment of the inven- (1" 3 Lid tion is shown in a machine adapted to butt both ends of the welt at the same time, and there is provided, therefore, a pair of welt rests 1 and 2, and a pair of welt cutters 3 and 1. The rest 1 and cutter 3 are carried by a head 5-which is mounted at the right of the machine to swingwin a horizontal plane on a vertical pin 6 (Fig. 6) carried by a horizontal plate 7 (Fig. 2) bolted to the top of a column 8 (Figs. 2 and 2 The rest 2 and-a cutter 1 are also mounted in a head 9 which is pivotally mounted at the left of the machine on a vertical pin 10 (Fig. 6) carried'by the plate 7. The heads 5 and 9 are mounted for simultaneous movement toward each other in order to position the rests beneath the loose ends of the welt at the opposite sides of a welted, unsoled shoe and for simultaneous separating movement to permit the unobstructed removal and insertion of the shoe out of and into operative position between the heads. To this end the head 5 carries a segment 11 which is engaged by a segment 12 (Fig. 2) formed on the vertical arm of a bell crank lever 13 pivoted on a horizontal pin 14 carried by a plate 15 rising from the right side of the plate 7 (see Fig. 2). The horizontal arm of the bell crank lever 13 is pivotally connected to a vertical rod 16 (Fig. 3), connected in turn to one end of a bar 17 (Figs. 1 and 2) carried upon the upper end' of a vertical rod 18 which is connected at its lower end with a treadle 19 pivotally mounted on the base of the column 8. lhe bar 17 carries at its other end asecond vertical rod 20 (Fig. 3) which is pivotally connected to the horizontal arm of a bell crank lever 21 pivoted on a plate 22 rising from the left side of the plate 7. Thevertical arm of the bell crank lever 21 has formed thereon a segme'nt23 which meshes with a segment 21 carried on the head 9. To hold the heads 5 and 9 normally separated the treadle 19 is connected to the column 8 by a coiled spring 25 (Fig. 2). With this construction adepression of the treadle causes the heads 5 and 9 to close and the welt rests 1 and 2 to engage in the welt crease and thus grip and hold a shoe in position between the heads.

In order to permit the ready removal, insertion and adjustment of the cutters 3 and 4 the shank of each of the cutters is mounted in a clamp 26 (Figs. 4 and 7) formed by a split cutter block 27. The cutter block 27 is adjustably mounted in an inclined guideway 28 (Fig. 9) formed in a carrier 29. The members of the cutting block are moved to clamp the shank of the cutter, and the block is held in adjusted position on the car'- ricr, by a clamping screw 30 having a shank which passes through a slot formed in the block 27. The screw 30 is threaded into the carrier and has a head which is held within a recess formed for its reception inthe front member of the block 27. Each of the welt rests 1 and 2 is provided with a body por-' tion 31 (Figs. 7 and 8) dove-tailed into the headsand secured therein by a screw 32. These rests each comprise a guard 33 (Fig. 8) arranged to extend in a horizontal plane beneath the loose ends of the welt over the marginal portion of the heel seat of the shoe, and an inclined Wing 34 having its lateral edge arranged to engage the stitches of the inseam in the welt crease and its upper face roughened to hold the welt.

In order to butt the ends of the welt the cutters are firstlowered from the position of Fig; 7 until their cutting edges engage the upper surface of that portion of the welt supported by the inclined wings 3a of the welt rests, and are then actuated rearwardly in the plane of the guards 33. This operation produces the desired bevel on the welt ends. lVith this constructionthe edge indicated at 35 (Fig. 8) at the line of juncture between the wing 34 and guard 33, acts as a blade coeperating with the cutter in shearing the wastepiece from the Welt.

Advantage is taken of the Well defined edge 35 between the roughened wing 34 and the smooth guard 33 to aid the operative in positioning the shoe for the welt butting operation. To this end the insole of the shoe may be provided with a mark 36 (Fig. 8), at some time before the shoe is brought to the machine, to indicate the proper line of termination of the butted ends'of the welt. By registering this mark with the edges 35 the proper position of the shoe relatively to the welt butting instrumentalities is insured without the use of gages and the judgment of the operative is not depended upon.

In order to lower the cutters into their operating plane the carriers for the cutters and 4: are secured to pivot pins 38 and 39 (Fig. 6) journaled in lugs 40 and T1 carried respectively by horizontal slides -12 and 43. These slides are mounted to slide on the heads 5 and 9 beneath gibs 44 seoured to the heads. To raise and lower the carriers 29 about their pivots 38 and 39 each of the carriers is provided at its forward end with a guideway -15 (Figs. at and. 7) which slidably embraces a square sleeve 46 loosely mounted on a horizontal rod 47, the opposite ends of which are secured to oblong blocks 48 (Fig. 2 mounted to slide 'in vertical slots 49 formed in .the vertical side plates 15 and 22. The sleeves 4:6 are held from movement longitudinally of the rod 47 by being each interposed between a boss having connected thereto abearing platefiO (Fig. 6) arrangedto slide in a slot on the adjacent vertical plate, and a central sleeve 51 on the rod/17. The sleeve 51 is of the arms of the frame 57 carries a roll 59 which engages a-peripheral groove 60 (Fig- 4) formed in a cam cylinder 61 on a shaft. 62 journaled at its front end in a hearing 63 (Fig. 4) and at its rear end in a bearing carried by the back plate 65 (Fig. 2) rising from the plate 7. From the above description it will be seen that the welt butting cutter carriers 29 arehung, by their guideways 45, from the lower arm of a toggle, the upper arm of which is formed by the yoke frame 54 and the lower arm of which is formed by the sleeve 51 and its arms 52. The floating rod 53 forms the knuckle of the toggle and power is applied thereto by the cam groove 60, through the yoke frame 57 and links 56, to make and break the toggle. When the links 56 are drawn rearwardly by the cam the toggle is broken, as shown'in Fig. 4, the cutter carriers 29 are raised abouttheir pivots 38 and 39, and the cutters are held above the welt rests. This is the location of the cutter carriers while, the shoe is being positioned. On starting the machine the cam moves the links 56 forward thus straightening the toggle and lowering the cutters to welt=butting position. v

After the cutters are lowered into their operating plane they are actuated rearwardly to butt the welt. To this end the slides 42 and 43 are pivotally connected by means of links 66 and 67 (Fig. 6) to a cen-- tral slide 68 mounted on the plate 7 beneath gibs 69. The slide 68 carries a roll 70 whichengages a peripheral groove 71 formed in a cam cylinder 72 on the shaft 62. Thus after the cutters have been lowered by the straightening of the toggle and are held rigidly in theirlowered position by a dwell in the .cam 60, the cam 71 operates through the slides 42., 43 and 68 to draw thecarriers rearwardly, the carrier guideways 45 per mitting such movement, and the knives 3 and 4 are thus drawn through the welt to sever the welt ends. Each cutter carrier is guided in its rearward movement -by a rib 29 on the head beneath it, which is embraced by depending wings 29 on the carrier (Figs. 6, 7 and 9). This construction also insures that the carriers 29 move inward and outward with the heads 5 and 9. During this movement they slide longitudinally on the squared sleeves 46.

The foregoing features of the illustrated machine, in so faras they relate to the welt butting operation, are not claimed herein as they form the subject-matter of a divisional application Serial No. 73,669, filed January 22, 1916.

The tack driving mechanism, used in the;

specific illustration for securing the butted ends of the welt of the insole, which forms the subject-matter of the present invention will now be described.

The constructions shown in the drawings for storing,selecting and delivering tacks for the operation of the tack insertingmechanism are substantially the same as those which have heretofore been employed in the well known Rex pulling over machine. As shown the tacks are stored in a tack pct 72 which is provided with the tack lifting and separating devices of the machine 'referred to for delivering tacks to a pair of covered raceways 73 (Fig. 1) from which the tacks are delivered to a pair of curved tubes 74 which conduct the tacks to the tack inserting devices. The tack pot is oscillated during the operation of the machine by a horizontal shaft 7 5 (Fig. 2) which is driven by an eccentric 76 on theshaft 62.

The lower endof each of the tubes 74 terminates in a flange 74 (Figs. 2 and 9) carried on a bracket secured to the side plate. A tube 77 forming a continuation of the tube 74 is pivoted at 78 on a swinging tacker frame '79. Thetwo tacker frames 79 are arranged on opposite sides of the machine (see Fig. 1) and are pivotally mounted on longitudinally arranged pivots 80 and 81 on inward projections of the plates 15 and 22 respectively. 7 These frames are identical in construction and so a detailed description of but one of them and the parts carried thereby is necessary for an understanding of the construction of both. Each of the tube portions 77 (Fig. 9) is normally held in a position to deliver a tack into a vertical throat 83 formed in a nose 84 bolted to the frame 79. by a springpressed plunger 85 mounted in a chamber formed in the nose 84. The bottom of the throat 83 is normally closed to prevent the loss of the tack delivered thereto, by spring pressed fingers movahly mounted on the nose 84. These fingers comprise, a slide 87 having a hooked, tack engaging end 86 mounted in ways 88, (Fig. 10) formed in the nose 84, and a slide 89 having a tack engaging end, abutting against the end 86, mounted in ways 90 also formed in the nose. The slides are reversely actuated in their ways to normally close the opening in the throat by means of a coiled spring 91 which is interposed between a lateral projection 92 on the slide 87- and the bottom of a chamber 93 (Fig. 9) formed in the slide 89. The throat 83 is located in 'cam cylinder 72 .the bar 95 is pivotally connected by means of a short link 96 (Figs. 1 and 2) to the horizontal arm of a modified bell crank lever 98 secured to a horizontal rod 99 journaled in a long bearing 100 (Fig. 9) formed at the upper end of the frame 79. The bearing 100-carries a coiled spring 101 one end of which is connected to the bearing and the otherend of which isconnected to a plate 102 rotatably mounted on the hearing. The tension of the spring 101 may be adjusted byrotating the plate 102 on the bearing 100 after which. the plate may be secured to the frame 79 by a pin 103. The drivers 94 are maintained elevated against the power stored in the springs 101 by connections from a peripheral groove 10% formed in the To this end the plates 15 and 22 respectively carry inwardly projecting pivoted arms 105 and 106 (Fig. 5) which are respectively provided with rolls 107 and 108 engaging the groove 104; in the cam cylinder 72*. Each of the arms 105 and 106 is connected to the vertical arm of the bell crank lever 98 by a horizontally arranged rod 109 which passes through the yoke frame 57 (see Figs. Land 5) and engages the lower end of the bell crank lever.

The construction is such that'the axes of levers 98, with rods109 and therefore tacksv may be driven whatever angular position 'tlie'frame 79 may assume.

In order to swing the tacker frames\79 toward each other and thus move thetack throats 83 into proper tack driving position at opposite sides of the shoe, each frame carries a toothed segment 111 (Fig.1) engaged by a toothed segment 112 formed on the end of an arm 113 secured to the front end of a horizontal rock shaft 114 (Fig. 2). The two rock shafts 11 1 are arranged at opposite sides of the machine and are journaled in bearings formed in the upper portions or the side plates 15 and 22. The rock shafts 114 are provided respectively at their rear endswith inwardly extending arms 115 and 116 (Fig. 3). The arm 115 is provided with a segmental slot 117 which embraces a sliding block 118 pivotally connected by a link 119 (Figs. 2 and 3) to a slide 120 mounted to slide vertically in ways formed centrally on the back plate 65. The slide 120 carries see signed to operate upon shoes varying widely in width, means is provided for automatically adjusting the extent of movement of the frames 7 9 in accordance with the width of the particular shoe inserted in the machine in order that the tacks may be uniformly brought to a position for insertion through openings 127 (Fig. 8) formed in the welt rests, which rests, by their engagement with the shoe, measure its width. To this end the link 119 is connected by a link 128 to a vertical arm 129 secured to one end of a rock shaft 180 journaled in bearings, formed on a bracket 131 carried by the bac plate 65. The rock shaft 130 also carries a horizontal arm 132 which is connected through a universally-jointed, adjustable link 133 to the pivotal connection between the bell crank lever 13 and the rod 16 (see Fig. 3). The link 121, as shown in Fig. 3, is similarly connected to the pivotal connec tion between the bell crank lever 21 and the rod 20. With this construction the blocks 118 and 122 are adjusted along the slots 117 and 123 when the operative swings the heads 1 her or outer ends of the slots 117 and 123.

The position of the blocks, therefore, determines the. extent ofinward movement imparted to the tacker frames 79. When the inward movement-of the rests under the influe-nee of the treadle 19 ceases, the posirests whatever the width of the shoe beingv operated upon.

In order to drive the tacks after the threats haveben positioned at the proper tacking points, one wall of the cam groove 101, which maintains the drivers 94 elevated against the tension of the springs 101, tera sharp blow by the tack driver.

rolls drop off the precipice they are immediately returned to the groove 104 by an .m-

' 62 to stop precipice the drivers are released to the infiuenceof the springs 101. As the drivers 94 move downward under the influence of the springs the tubes, '77 are pushed aside,

swinging about their pivots 78, to permit the drivers to pass and engage the heads of the tacks. Downward movement of the tacks under the influence of the drivers wedges apart the spring pressed fingers forming the wallsof the throats83, thus permitting the tacks to pass out of the throats and into the' shoe. As shown in Figs. 11, 12 and 13 each of the journals for the rolls 107 and 108 carries a lug 135 which, when the roll reaches the precipice134, engages a lug 135 projecting radially from the periphery of the cam cylinder and thus the roll is supported until it has cleared the edge of the precipice permitting anabrupt drop and consequently cline 136. formed in the cam cylinder 72 This incline restores the power in the springs 101 and elevates the.driver's for another tack'driving operation, the tubes 77' swinging back into position and delivering tacks to the throats at this time.

' The shaft 62 is driven during the operation of the machine from a pulley 137 (Fig. 2) through a .Horton clutch the roll carrierof which is indicated generally at 138,

138 beingthe sleeve within it being splined to the shaft 62. This clutch is controlled manually by the operative to start the machine but is automatically controlled upon thecompletion of one revolution of the shaft the machine. The roll carrier .138 is provided with the usual lug-139 which normally engages a spring pressed bunter 140 (Fig. 3) to release the shaft 62. Thev hunter 140 is-mounted in a chamber 141 formed in an arm 1.42 which is, pivotally mounted on a pin 143*secured. to the back plate 65 so th'atthe hunter can be withdrawn from engagement with the lug. Thepin 143 also carries loosely a dog 144 arranged to engage a lug 144 on the sleeve 138, facing oppositely to the lug 139, and

hold the shaft in an invariable position when it is stationary to insure a uniform starting of the cycle of operations of the machine. The bunter 140 and dog 144 are withdrawn from the lugs 139 and 144, to permitthe shaft to be driven by the driving pulley 137, by connections from a handle 145 (Fig. 2) located, in a convenient position for manipulation by the operative, at the front of the machine. To this end the arm 142 carries a pin 146 which is normally engaged by a hook 147 (Fig. 3) pivotally mounted on a slide 148 mounted to slide ver- After the taneously remove the dog '144 from its lug 144 the arm 142 is provided with a pin 156 which when the arm 141 is rocked in the manner described engagesa tail 157 on the dog 144-and rocks it downwardly about the pin 142., This permits the springs of the Horton clutch to rotate the roll carrier 138 and grip the sleeve 138 to turn the shaft 62. \Yhile the clutch is in operating position the lugs 139 and 144 lie approximately side by side. i

In order to immediately return the hunter 140 to a position where it may reengage its lug 139 and stop the rotationof the shaft 62 at the completion of a single revolution, the plate 149 carries a stop 158 which strikes a tail159 on the hook 147 when the latter is lowered and rocks the hook 147 about its pivotal connection with the slide 148 thereby causing the hook to be disengaged from the pin 146. The operative now releases the handle 145 which has sufficient weight, through the connections described, to elevate the slide 148. As the slide 148 rises its up- ,per end strikes the underside of the arm 142 the roll carrier 138, the continued movement of the sleeve 138 frees the Horton clutch rolls, thus freeing the roll carrier from the shaft 62, and also carries the lug 144 past the end of the dog 144 so that when the movement of the sleeve is checked by the roll springs its return is prevented by the engagement of the lug 144 with the end of the dog 144. a

For convenience in delineation the machine has been illustrated with the parts all in a neutral position, that is, with the heads 5 and 9 carrying the welt rests and cutters parallel .to each other (see Figs. 1 and 6) and consequently the segments 11 and 24 in central position and the blocks 118 and 122 at the centers of the slots in the arms 115 and 116 respectively (see Fig. 3). It will be the hunter 140 from its lug'139l To simulclear, however, from the foregoing description, that when the machine is at rest, ready for the insertion of a shoe, the heads 5 and 9 are at an angle to each other and in their outermost positions permitted by the upward movement of the treadle rod 18, determined by the engagement of the treadle with the stop 19 (Fig. 2 which will cause the blocks, 118 and 122 to rest in the outer ends of the slots in the arms 115 and 116 respectively.- At this time the tacker frames 79' and driver bars 95 are in the-positlon shown in Figs. 1 and 9 with the upper ends of the tack tubes 77 beneath the lower ends of the tack tubes 74, due to the slide 120 being in its upper position, as in Fig. 8. The cutters are raised as in Figs. 1 and 4: with the toggle broken.

Tn operating the machine illustrated in the drawings the operative inserts a welted, unsoled shoe between the heads 5 and 9 and then depresses the treadle 19 to bring the welt rests into position in the welt creases at the opposite sides of the shoe. As the heads swing in, the operative manipulates the shoe until the mark 36 on the insole, if it be marked, registers with the edges 35 on the welt rests. After the welt rests have engaged the shoe the operative may, by applying further pressure to the treadle, cause the welt rests to tighten the materials of the shoe at the welt butting points if consid ered desirable. As heretofore described the narrower the shoe being positioned, the greater will be the movement of the blocks 118 and 122 toward the inner ends of their slots in the arms 115 and 116, consequently the inward movement of the tacker frames 79 will be greater for a narrow shoe than for a wide one, as is necessary to bring the tacker throats into proper tacking relation to the welt ends. As soon as the shoe has been positioned properly the operative raises the handle 145 thus throwing in the Horton clutch 138, 138 The first movement of the machine is the lowering of the cutters into the plane of the guards 33 of the welt rests. Then the cutters are actuated longitudinally of the shoe to butt the welt the rearward movement being suflicient to carry them out of the way of the advancing welt tackers. As soon as the cutters sever the welt ends the tacker frames 79 swing toward each other and a tack is driven into each of the butted welt ends through the tack openings 127 as shown in Fig. 16. The tacker frames then separate, the tack tubes 74: and 77 are again joined, two 'new tacks are delivered to the throats 83, the cutters are returned to the position of Fig. 7, the clutch thrown out, and the machine stopped. The operative now removes his foot from the treadle to permit the heads to separate and the shoe is removed the welt ends having been beveled and secured to the insole.

As soon as the handle 145 is released the hook 147 reengages the pin 142 and the clutch controlling mechanism is again so connected that the machine may be started by another upward movement of the handle.

It will be noted from the foregoing de scription that in driving a tack into the welt of anarrow shoe the tack drivers stand at a more acute angle to the plane of the insole than when driving a tack into a shoe of greater width. This is distinctly advantageous as it is desirable to drive the tack as nearly perpendicular to the metal heel seat of the last as possible so that the point of the tack will be properly turned so as to clench. The narrower shoes, such as womens work, have more rounded heel seats than the wider shoes for mens work. With the construction described as the greater widths of shoes are operated upon the adjustments provide for driving the tacks more nearly perpendicular to the sole face thus compcneating for the lessening curve of the heel seat and providing for an effective clenching of the tacks. Tf the tacks are not driven substantially perpendicular to the surface of the heel seat beneath the welt, they will merely bend on the grain side of the insole, not securing the welt firmly in place and will be uncomfortable to the wearer of the shoe.

It is sometimes desirable, owing to the particular style of shoe being operated upon, or for some other reason, to provide for a greater movement of one of the tacke-r frames than the other. This is taken care of in the provision of the adjustable links 133 (Fig. 3) as it will be clear that through their adjustment the normal position of either of the blocks 118 and 122 can be changed at will and consequently the path of movement of the tacker frames 79 under the influence of the cam 125. Provision is also made for delivering more than two tacks from the tack pot and if desired the tack throats of each tacker frame may be duplicated and two, or more, tacks may be driven simultaneously into the welt ends at each side of the shoe. The word tack as used in this specification is inclusive of any fastening device suitable for securing the welt to the insole.

It will be clear from the foregoing description that the conjoint use of all the illustrated devices and mechanisms in a single machine is unnecessary and, in fact, is sometimes undesirable as those skilled in the art will readily recognize, and it will further be recognized that some of the features of the machine, as for instance. the tacking mechanism, may be used without others and for a variety of different operations on a shoe bottom with excellent 'results; I

1t will be clear to those skilled in this true scope in the claims herewith:

class of machines' and with the general objects'of the present invention in view, that changesinay be made in the details of structure, the described and illustrated embodimentthereof being intended'as an. exploitation of its underlying essentials, the featureswhereof are definitely stated-in their VVhat is'claimedias new,is:*- f 1. machine for operating on shoebottoms; having, in combination, ,a pair of tacker mechanisms mounted to swing, one on each side of'the machine, about independent axes, a pair of rock shafts, one on each sideof the machine, operative connections between each rockshaft and tacker mechanism located on the .same side of the machine, and a cam for rockingthe shafts,

substantially as described.

2. A machine for operating on shoe bot toms, having, in combination, a pair of tacker mechanisms mounted to swing, one on each side of the machine, about independent axes, a pair of rock shafts, one on each side of the machine, operative connec tionsbetween each rock shaft and tacker mechanism located-on the same side ofthe machine, a cam for rocking the shafts, and

adjustable connections between the cam and rock shafts, substantially as described.-

3. A machine for operating on shoe bottoms, having, in combination, a pair of tac-ker mechanisms mounted to swing, one on each side of the machine, about independent axes. a pair of rock shafts, one on each side of the machine, Operative connections between each rock shaft and tacker mechanism located on the same side of the machine, a cam for rocking the shafts, adjustable connections between the cam and rock shaftsfand .means controlled by the width, of the 'shoebeing operated upon for adjusting the adjustable connections, substantially as described.

.4. A machine for operating on shoe bottoms, having, in combination, twq-tacker mechanisms, one ateachsideof the shoe, movable across the shoe bottom about fixed axes, an actuator. operating't'e swing said tackers a definite-angular .distan'ce about their axes, and adjustable connections be tween said actuator and tackers to modify scribed.

before they are moved outward, substantially as described. Y

6. A machine for operating on shoe bottoms, having, in combination, means for supporting af shoe, a pair of tacker mechanisms mounted to swing across the shoe bottom about fixed axes, mechanism for swinging v thejtacker mechanisms, and means for ad- .justing said mechanism to vary the extent of swinging movement imparted to the tacker mechanisms, substantially .as de- 7. A machine for operating on shoe botitoms, having, in combination, means for supporting the shoe in a fixed position, a 'tacker mechanismincluding a driving spring all of which is mounted for swinging movement transversely acrossthe shoe bot- .tom about a fixed axis, and means for controlling the operation ofthe driving spring,

substantially as described.

8. A machine for operating on shoe bottoms, having, in combination, a tacker mechanismincluding a driving .spring all of the angular extent of the movement nor-' which is mounted for swinging movement across the shoe bottom about a fixed axis, and means for controlling the operation of the'driving spring including a rod having an axis coincident with the axis of the tacker mechanism, substantially as described.-

9. A machine for operating on shoe bottoms, having, in combination, a tacker frame normally at one sideof the shoe, means to move the frame inward variable distances to place it over the shoe bottom into position to drive a tack in the margin of'shoes of varying widths, and means to predetermine the required extent of the movement of the tacker frame, substantially as described.

10; A machine for operating on shoe botv toms, having, in combination, a tacker frame normally at one side of the shoe, means to move the frame across the shoe bottom into position to drive a tack therein, constructed to impart a definite throw to the frame, and

mechanism to vary the extent of the throw imparted by said means, substantially as described.

\ 11, A machine for operating on shoe bottoms, having in combination, a tacker frame normally at one sideof the shoe, means to move the frame across the shoe bottom into position to drive a tack therein, constructed to impart adefinite throw to the frame, and mechanism controlled by the width of the shoe being operated upon to vary the extent of the throw imparted by said means, substantially as described.

12. A machine for operating on shoe bottoms, havingin combination, a tacker frame normally atnone side of the shoe means to move the frame across the shoe bottom into position to drive a taclctherein. constructed to impart a definite throw to the frame, and adjustable connections in said means permitting the path of said throw to be varied, substantially as described. 13. A machine for operating on shoe bottoms, having in combination, a tacker frame normally at one side of the" shoe, and means to impart to the frame a definite inward throw, of varying extent from a fixed starting point, to place it over the bottoms of shoes of varying widths in position to drive a tack in the margin of the shoe bottom,

substantially as described.

trolled by the inward movement of said heads, whereby the tacker frames are invariably moved into proper tacking position over the shoe bottom whatever the width of shoe being operated upon, substantially as described.

15; A machine for operating on shoe bot toms, having in combination, two shoe engaging heads on opposite sides of the machine, two tacker frames at opposite sides of the machine, mechanism, including adjustable connections, for moving said tacker frames inward across the shoe bottom into tacking position and means for moving said heads-inward to" hold a shoe between them and simultaneously adjust said adjustable connectionsto vary the inward movement of the tacker frames to accord with the width of shoe held by the heads substantially as described. 5 j

g 16. A machine for operating on shoe bottoms, having, incombination, two reciprocatory heads on the opposite sides of the machine, a pair of independently mounted tacker mechanisms mounted to swing one at each side of the machine about fixed axes, automatic mechanism for swlngmg the tacker mechanisms inwardly, including adjustable devices for varying the extent of their swinging movement, and a single means for reciprocating the heads and adjusting the adjustable devices,substantially as described.

17. A machine for operating on shoe bottoms, having, in combination, a reciprocating head having a device for engaging the shoe, an independently mounted tacker mechanism mounted to swing above the head about a fixed axis, a rock shaft, operative connections between the rock shaft and tacker mechanism, a cam, adjustable connections between the cam and rock shaft for varying the angular movement imparted to :naaaaoe the shaft by the cam, and a single means formovin-g the head inward and adjusting saidadjustable connections, substantially as described. j

. 18. A machine for operating on shoe bottoms, having, in combination, two heads on the opposite sides of the machine adapted to hold the shoe between them, two independently mounted tacker mechanisms, one above each head, means for moving the tacker mechanisms inward andoutwardacross the shoe bottom toward andfrom the shoe, and means controlled by the position of the heads for determining the amount of the inward movement of the tacker mechanisms whereby they are invariablypositioned to drive tacks in the same portion of the shoe whatever the Width of the .shoe being operated upon, substantially as described.

19. A machine for operatingon shoe bottoms, having. in combination, a tacker frame mounted to swing toward and from the shoe on a horizontal pivot above the shoe into and out of tacking position above the shoe, said frame having a tack throat and carrying a driver bar to operate therein, and means for imparting to said frame greater'or less angular movements about its pivot as the shoe to be operated on is narrow or wide, whereby the driver bar is brought to a position substantially perpendicular to the plane of the shoe bottom, whereby the tack driven through the throat is properly clenched, substantially as described.

20. A machine for operating on shoe bottoms, having, in combination, a pair of tacker frames mounted to swing toward and from each other on a pair of horizontal pivots above the shoe", each of said frames having a tack throatand carrying a'driver bar to operate therein, and means for swinging said frames about their pivots through a greater arc for a narrow shoe than for a wide shoe thus increasing theangle between the driver bars as the shoe narrows in width and maintainingsaid bars substantially perpendicular to the plane of the shoe bottom, substantially as described.

21. A machine for operatlng on shoe bot toms, having, in combination, a tacker mech anlsm mounted for swinging movement across the shoe bottom about a fixed axis,

said mechanism including a driving spring, and means for setting and releasing said spring having an actuating device operating in the axisof the tacker mechanism, substantially as described. 7

22. A machine for operating on shoe bottoms, having, in combination, a tack driver, driver bar and driver spring, a tacker frame carrying said parts arranged to swing about a fixed axis, a bell crank lever connected to be operated by said spring having one arm connected with said driver bar and its other arm extending opposite the axis of the tacker 

